ADJUST THE CAMERA, NOT THE ACTOR

Sometimes actors miss their marks consistently, and it’s almost always easier to move the camera to restore the composition than it is to try to move the actor’s mark. Let them miss their mark consistently rather than giving them a new mark to miss. At least they’ll end up in the same place every time, and you have more control over the camera that you do over them.
If you do need to move an actor in order to get a better shot, and there’s more than one actor in the shot, don’t move the star if you can help it. I learned that lesson the hard way once. Move the lesser actor.